Global Patent Index - EP 0343139 A3

EP 0343139 A3 19910320 - METHOD AND APARATUS FOR FORMING A DRY WEB ON THE WIRE

Title (en)

METHOD AND APARATUS FOR FORMING A DRY WEB ON THE WIRE

Publication

EP 0343139 A3 19910320 (EN)

Application

EP 89850168 A 19890519

Priority

FI 882401 A 19880520

Abstract (en)

[origin: EP0343139A2] This invention is related to a method and an apparatus for forming a dry web on the wire, with the fibre material being fed into at least one perforated drumlike forming element (2) that covers essentially the whole width of the web to be formed, in which forming element fibres are in an in itself known method conveyed in the drum along the width of the web and screened through the mantle of the forming element onto the wire (1). To achieve such web formation as has as few disturbances as possible, the fibre material is according to the invention fed into the drumlike forming element (2) in such a way that the bulk of the fibres, when advancing in the feeding direction toward the other end of the forming element, get screened from the forming element onto the wire (1), and that those fibres that do not get screened, but travel through the forming element are removed from the forming element (2) and returned for a new defibration.

IPC 1-7

D21H 5/26

IPC 8 full level

D04H 1/70 (2006.01); D21F 9/00 (2006.01); D21H 23/00 (2006.01); D21H 27/00 (2006.01)

CPC (source: EP US)

D21F 9/00 (2013.01 - EP US)

Citation (search report)

Designated contracting state (EPC)

DE ES FR GB IT SE

DOCDB simple family (publication)

EP 0343139 A2 19891123; EP 0343139 A3 19910320; EP 0343139 B1 19950322; CA 1332303 C 19941011; DE 68921789 D1 19950427; DE 68921789 T2 19950824; ES 2070192 T3 19950601; FI 83352 B 19910315; FI 83352 C 19910625; FI 882401 A0 19880520; FI 882401 A 19891121; JP 2608610 B2 19970507; JP H0227000 A 19900129; US 5068079 A 19911126

DOCDB simple family (application)

EP 89850168 A 19890519; CA 600189 A 19890519; DE 68921789 T 19890519; ES 89850168 T 19890519; FI 882401 A 19880520; JP 12559189 A 19890520; US 59045990 A 19900926